ESTHER HWANG M.D.
NPI 1215035670
Internal Medicine - Rheumatology in Portland, OR

Q: What is Esther Hwang's NPI number?

The NPI number for Esther Hwang is 1215035670. It was assigned to this individual provider in the NPPES registry on September 20, 2006. The provider is also known as Esther Tsou M.D..

Q: What is Esther Hwang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for Esther Hwang was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 20, 2006PECOS EnrolledAccepts Medicare Assignment

3550 N INTERSTATE AVE, PORTLAND, OR 97227(800) 813-2000 Get Directions Write a Review

NPPES record last updated: March 4, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Esther Hwang M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ESTHER HWANG M.D. (NPI 1215035670) is an individual rheumatology provider in Portland, Oregon, licensed in Oregon (MD24530) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, is affiliated with Peacehealth Southwest Medical Center, and is a graduate of University Of California, San Diego School Of Medicine (2000).

NPPES Registry Identity

NPI1215035670

Entity TypeIndividualFemale

Primary Taxonomy207RR0500X

Provider Legal NameESTHER HWANGCredential: M.D.

Location Address3550 N INTERSTATE AVEPortland, OR 97227-1097

Mailing Address500 Ne Multnomah St Ste 100Portland, OR 97232-2099 · (800) 813-2000

Phone(800) 813-2000

Sole ProprietorNo

Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2000

Enumeration DateSeptember 20, 2006

Last NPPES UpdateMarch 4, 2026

NPPES CertifiedMarch 4, 2026

✔ NPI 1215035670 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

Licenses✔ Licensed in OR · MD24530✔ Licensed in WA · MD00042736✔ Licensed in OR · MD226040

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

3550 N INTERSTATE AVE, Portland, OR 97227

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Other Names 1

Former Name (1)Esther Tsou M.d.

Other Identifiers 3

Other0243641WA · L & I

Medicaid227429OR

Medicaid8377558WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Esther Hwang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6204829799

PECOS Enrollment IDI20040408000707, I20150220002128

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

1,920 services18 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

262 services113 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

255 services138 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

253 services98 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

216 services87 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

49 services41 patients

Manual urinalysis test with examination using microscope, automated 81001

A manual urinalysis test with automated microscopic examination is a lab process that checks your urine for health indicators. It involves a machine scanning your sample to identify any abnormal elements, which can assist in diagnosing various conditions.

38 services26 patients

Red blood cell sedimentation rate, to detect inflammation, automated 85652

The Red Blood Cell Sedimentation Rate is a test that helps detect inflammation in the body. It's automated, meaning a machine does the work. This test measures how fast red blood cells settle at the bottom of a tube in an hour. A faster rate may indicate inflammation.

35 services23 patients

Measurement c-reactive protein for detection of infection or inflammation 86140

C-reactive protein (CRP) test is a blood test that checks for signs of inflammation or infection in the body. High levels of CRP often suggest that there's inflammation or a bacterial infection. This test helps in monitoring and managing conditions like arthritis and heart disease.

35 services23 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

34 services21 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

27 services18 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

16 services16 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Peacehealth Southwest Medical Center

Acute Care Hospitals · Vancouver, WA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500050

Location400 NE Mother Joseph PlaceVancouver, WA 98668 · Clark County

Emergency services Birthing friendly

Legacy Salmon Creek Medical Center

Acute Care Hospitals · Vancouver, WA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500150

Location2211 NE 139th StreetVancouver, WA 98686 · Clark County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97227 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$134.16 typical visit price

range $58.99 – $176.88

Typical copayment $33.54 (range $14.74 – $44.22)

Most-billed visit code 99204

Established Patient

$103.51 typical visit price

range $19.32 – $144.79

Typical copayment $25.87 (range $4.83 – $36.19)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JAMES PAUL BRYANT LCSW, CADC 3

Counselor

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Multnomah County (503) 964-0000

ALISON D. ARMOUR PSYD

Psychologist (Clinical)

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Multnomah County (503) 813-2000

MS. JESSICA A DUDLEY FNP

Nurse Practitioner (Family)

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Multnomah County (503) 746-1575

DANAYA LEE HALL SWHNP

Nurse Practitioner

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Multnomah County (800) 813-2000

MS. JANET LEE MUCKRIDGE RD LD

Dietitian, Registered

3550 N INTERSTATE AVE, NUTRITION DEPARTMENT EAST INTERSTATE
PORTLAND, OR 97227

Multnomah County (503) 286-6871

KAISER FOUNDATION HEALTH PLAN OF THE NORTHWEST

Pharmacy (Managed Care Organization Pharmacy)

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Multnomah County (866) 279-6122

COURTNEY JOHNSON LCSW

Social Worker (Clinical)

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Multnomah County (800) 813-2000

CHIA NENG VANG RPH

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

3550 N INTERSTATE AVE
PORTLAND, OR 97227

Multnomah County (866) 279-6122

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Esther Hwang's NPI number?

The NPI number for Esther Hwang is 1215035670. It was assigned to this individual provider in the NPPES registry on September 20, 2006. The provider is also known as Esther Tsou M.D..

Where is Esther Hwang located?

Esther Hwang practices at 3550 N Interstate Ave, Portland, OR 97227. The listed phone number is (800) 813-2000.

What is Esther Hwang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Esther Hwang enrolled in Medicare?

Yes. Esther Hwang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Esther Hwang accept?

Health plans from Moda Health Plan, Inc. list Esther Hwang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Esther Hwang affiliated with any hospitals?

According to CMS data, Esther Hwang is affiliated with Peacehealth Southwest Medical Center and Legacy Salmon Creek Medical Center.

When was this NPI record last updated?

The NPPES record for Esther Hwang was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.